根据下列材料，请回答下列各题： Questions 61 to 65 are based on the following passage. When it comes to video games and apps, whats a parent to do? On the one hand, were told about the harm of letting kids play with computer games and gadgets (小器具). On the other, were attracted by games and apps marketedtd us as 'educational'. Its a tricky line to follow. Kids apps range from 'baking' cupcakes to crushing war demons (恶魔)Most of them have some educational aspect--at the very least kids learn what ingredients are used in cupcake baking, and the physics of launching Angry Birds at just the right angle to kill the piggies. Thats learning, isnt it? There lie the vague boundaries. Not all games are educational, and not all are shallow forms of entertainment. In fact, most have some elements of both. The trick is to figure out what we want kids to learn and to experience. To collect them all into one category is to miss out on a huge treasure trove (宝库)of learning opportunities. Real learnh apps have a set of criteria that qualifies them as educational, sorather than writing them all off as a waste of time, parents can figure out what their kids are exposed to.'We dont ever want to separate engagement from the purposes of learning,' said Daniel Edelson, Executive Director and Vice President of Educa on and Childrens Programs at the National Geographic Society at a cyber-learning conference last week. 'When youre engaged with activities that have learning goals, you can connect the dots between engagement and learning. If you use engagement in its broadest possible sense when people are paying attention because of bright lights and activity, then you dont find that connection. ' So should parents feel guilty allowing their kids to play games on mobile devices? 'No,' says Dr. Michael Levine of the Joan Ganz Cooney Center, which recently released a study called Learning : Is There an App For That. 'Kids see their parents using mobile phones all the time. Its only natural for them to want to use them too. And from the data in our study it looks like, many parents are letting their children use them responsibly--with restrictions and in moderation. ' What can be inferred from the first paragraph?